Sidewall



FIG. 1 is a perspective view of a sidewall showing our new design; and,

FIG. 2 is a front elevational view thereof.

In the drawings, the broken lines showing of the tire tread, inner bead and the peripheral boundary between the tire tread and the sidewall in FIGS. 1 and 2 depict environmental subject matter and form no part of the claimed design. 

CLAIM The ornamental Design for a sidewall, as shown and described. 